HMS H28

History
United Kingdom
Name	H28
Builder	Vickers Limited, Barrow-in-Furness
Laid down	18 March 1917
Launched	12 March 1918
Commissioned	29 June 1918
Fate	Scrapped, 18 August 1944
General characteristics
Class and type	H-class submarine
Displacement	423 long tons (430 t) surfaced 510 long tons (518 t) submerged
Length	171 ft 0 in (52.12 m)
Beam	15 ft 4 in (4.67 m)
Propulsion	1 × 480 hp (358 kW) diesel engine 2 × 620 hp (462 kW) electric motors
Speed	11.5 knots (21.3 km/h; 13.2 mph) surfaced 9 knots (17 km/h; 10 mph) submerged
Range	2,985 nmi (5,528 km) at 7.5 kn (13.9 km/h; 8.6 mph) surfaced 130 nmi (240 km) at 2 kn (3.7 km/h; 2.3 mph) submerged
Complement	22
Armament	4 × 21 in (533 mm) bow torpedo tubes 8 × 21-inch torpedoes

HMS H28 was a British H-class submarine built by Vickers Limited, Barrow-in-Furness, as part of the Batch 3 H-class submarines. She was laid down on 18 March 1917 and was commissioned on 29 June 1918. H28 was the only British submarine to see active service in both World Wars, and was finally scrapped in 1944.